quantal

/ˈkwɑntl/
adjective
  1. Relating to or consisting of discrete quantities or units; occurring in distinct steps rather than continuously.
    • The drug showed a quantal response, meaning patients either got better or did not, with no partial effect.
    • In a quantal experiment, each subject either succeeds or fails — there is no middle ground.
    • The release of neurotransmitters happens in quantal packets at the synapse.
Antonyms
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